Protesters who hold UN soldiers from Nepal responsible for a deadly outbreak of cholera which has killed nearly 1,000 people have barricaded Haiti’s second-largest city, burned cars and stoned a peacekeeping base.

United Nations investigators took samples of foul-smelling waste trickling behind a Nepalese peacekeeping base in Haiti amid claims that sewage from the newly arrived unit caused the cholera epidemic that has made more than 4,000 people ill.